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Minor code cleanups; no functionality change. 

llvm-svn: 63740
This commit is contained in:
Dan Gohman 2009-02-04 17:28:58 +00:00
parent 2ada048975
commit 556d14d483
1 changed files with 11 additions and 10 deletions
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21
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -976,11 +976,11 @@ SDValue X86TargetLowering::LowerRET(SDValue Op, SelectionDAG &DAG) {
// Returns in ST0/ST1 are handled specially: these are pushed as operands to
// the RET instruction and handled by the FP Stackifier.
if (RVLocs[i].getLocReg() == X86::ST0 ||
RVLocs[i].getLocReg() == X86::ST1) {
if (VA.getLocReg() == X86::ST0 ||
VA.getLocReg() == X86::ST1) {
// If this is a copy from an xmm register to ST(0), use an FPExtend to
// change the value to the FP stack register class.
if (isScalarFPTypeInSSEReg(RVLocs[i].getValVT()))
if (isScalarFPTypeInSSEReg(VA.getValVT()))
ValToCopy = DAG.getNode(ISD::FP_EXTEND, dl, MVT::f80, ValToCopy);
RetOps.push_back(ValToCopy);
// Don't emit a copytoreg.
@ -1042,7 +1042,8 @@ LowerCallResult(SDValue Chain, SDValue InFlag, CallSDNode *TheCall,
// Copy all of the result registers out of their specified physreg.
for (unsigned i = 0; i != RVLocs.size(); ++i) {
MVT CopyVT = RVLocs[i].getValVT();
CCValAssign &VA = RVLocs[i];
MVT CopyVT = VA.getValVT();
// If this is x86-64, and we disabled SSE, we can't return FP values
if ((CopyVT == MVT::f32 || CopyVT == MVT::f64) &&
@ -1054,21 +1055,21 @@ LowerCallResult(SDValue Chain, SDValue InFlag, CallSDNode *TheCall,
// If this is a call to a function that returns an fp value on the floating
// point stack, but where we prefer to use the value in xmm registers, copy
// it out as F80 and use a truncate to move it from fp stack reg to xmm reg.
if ((RVLocs[i].getLocReg() == X86::ST0 ||
RVLocs[i].getLocReg() == X86::ST1) &&
isScalarFPTypeInSSEReg(RVLocs[i].getValVT())) {
if ((VA.getLocReg() == X86::ST0 ||
VA.getLocReg() == X86::ST1) &&
isScalarFPTypeInSSEReg(VA.getValVT())) {
CopyVT = MVT::f80;
}
Chain = DAG.getCopyFromReg(Chain, dl, RVLocs[i].getLocReg(),
Chain = DAG.getCopyFromReg(Chain, dl, VA.getLocReg(),
CopyVT, InFlag).getValue(1);
SDValue Val = Chain.getValue(0);
InFlag = Chain.getValue(2);
if (CopyVT != RVLocs[i].getValVT()) {
if (CopyVT != VA.getValVT()) {
// Round the F80 the right size, which also moves to the appropriate xmm
// register.
Val = DAG.getNode(ISD::FP_ROUND, dl, RVLocs[i].getValVT(), Val,
Val = DAG.getNode(ISD::FP_ROUND, dl, VA.getValVT(), Val,
// This truncation won't change the value.
DAG.getIntPtrConstant(1));
}